<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8"
          ><el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button> </el-input
        ></el-col>
        <el-col :span="4"
          ><el-button type="primary" @click="addUser"
            >添加用户</el-button
          ></el-col
        >
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="changState(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="deleteUserById(scope.row.id)"
            ></el-button>
            <el-tooltip
              :enterable="false"
              effect="dark"
              content="分配角色"
              placement="top"
            >
              <!-- 分配角色按钮 -->
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="openRoleDialog(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 显示分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框区域 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="resetsForm"
    >
      <!-- 正文 -->
      <el-form
        ref="addFormRef"
        :model="addForm"
        label-width="70px"
        :rules="addFormRules"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部模块区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUserItem">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClose"
    >
      <!-- 主体内容 -->
      <el-form
        ref="editFormRef"
        :model="editForm"
        label-width="70px"
        :rules="addFormRules"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
  title="分配角色"
  :visible.sync="showRoleVisible"
  width="50%" @close="removeRoleInfo">
  <p>当前的用户：{{userInfo.username}}</p>
  <p>当前的角色：{{userInfo.role_name}}</p>
  <p>分配新角色：
    <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in roleList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
    </el-select>
    </p>
    
  <span slot="footer" class="dialog-footer">
    <el-button @click="showRoleVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9]+[-_.]?)+@[a-zA-Z0-9]+.[a-z]+$/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    //验证手机的规则
    var checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^[1][3-9][0-9]{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      //用户列表请求参数
      queryInfo: {
        query: '',
        //指定当前是第几页
        pagenum: 1,
        //指定一页显示多少条数据
        pagesize: 4,
      },
      //获取用户列表数据
      userList: [],
      //指定总共有多少条数据
      total: 0,
      //对话框关闭
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      // 添加表单规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
        email: [
          { required: true, message: '请输入登录邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' },
        ],
      },
      //默认关闭编辑对话框
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
       //默认关闭分配角色对话框
      showRoleVisible:false,
      //需要分配角色的用户信息
      userInfo: {},
      //角色所有列表
      roleList: [],
      //已选择的角色id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    //axios发送请求获取用户列表数据
    async getUserList() {
      const { data: res } = await this.$https.get('users', {
        params: this.queryInfo,
      })
      if (res.meta.status != 200) {
        return this.meta.$message.error('获取用户列表失败!')
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    //改变每页显示的条数
    handleSizeChange(newValue) {
      this.queryInfo.pagesize = newValue
      this.getUserList()
    },
    // 改变当前是第几页
    handleCurrentChange(newValue) {
      this.queryInfo.pagenum = newValue
      this.getUserList()
    },
    // 修改用户状态
    async changState(userInfo) {
      const { data: res } = await this.$https.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status != 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    //点击添加打开对话框
    addUser() {
      this.addDialogVisible = true
    },
    // 重置添加用户时的表单数据
    resetsForm() {
      this.$refs.addFormRef.resetFields()
    },
    //添加用户
    addUserItem() {
      //表单预验证
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        //可以发起添加用户请求
        const { data: res } = await this.$https.post('users', this.addForm)
        console.log(res)
        if (res.meta.status != 201) {
          return this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        //关闭用户添加用户对话框
        this.addDialogVisible = false
        //刷新页面
        this.getUserList()
      })
    },
    //点击按钮打开编辑对话框,并根据id查询用户信息
    async showEditDialog(id) {
      this.editDialogVisible = true
      const { data: res } = await this.$https.get('users/' + id)
      if (res.meta.status != 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.$message.success('查询用户信息成功！')
      this.editForm = res.data
    },
    // 重置修改后表单
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      //表单预验证
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        //可以发起编辑用户请求
        const { data: res } = await this.$https.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        )
        if (res.meta.status != 200) {
          return this.$message.error('修改用户失败！')
        }
        this.$message.success('修改用户成功！')
        //关闭编辑用户对话框
        this.editDialogVisible = false
        //刷新页面
        this.getUserList()
      })
    },
    //通过id删除用户
    async deleteUserById(id) {
      const resResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch(error => error)
      if (resResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
        const { data: res } = await this.$https.delete('users/' + id)
        if (res.meta.status != 200) {
          return this.$message.error('删除失败！')
        } 
          this.$message.success('删除成功！')
          this.getUserList()
    },
    // 点击分配角色，打开对话框
    async openRoleDialog(userInfo) {
      this.showRoleVisible = true
      this.userInfo = userInfo
      //获取所有角色的列表
      const {data:res} = await this.$https.get('roles')
      if (res.meta.status != 200) {
        this.$message.error('获取角色列表失败！')
      }
      this.roleList = res.data
      console.log(this.roleList)
      this.$message.success('获取角色列表成功！')
    },
    //保存角色信息
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择你要分配的角色！')
        
      }
      const {data:res} = await this.$https.put(`users/${this.userInfo.id}/role`,{
        rid:this.selectedRoleId
      })
      if (res.meta.status != 200) {
        this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.showRoleVisible = false
    },
    //清除角色信息
    removeRoleInfo() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
.el-card {
  box-shadow: 0 0 1px rgba(0, 0, 0, 0.15) !important;
}
</style>